High-Speed Focal Tracking Projection Based on Liquid Lens
A high-speed projection system with a dynamic focal tracking technology based on a variable focus lens was illustrated. The traditional projection was limited on 2D space, due to their narrow depth-of-field projection range. Our system included a high-speed projector, a high-speed variable focus lens, and high-speed visual feedback, so that the depth and rotation information would be detected and then served as feedback to correct the focal length and update the projection information in high-speed. As a result, the information would be well-focused projected even on a 3D dynamic moving object.
Furthermore, it is expected that any physical surface in the real world are possible to be repaint with projection, the appearance is freely manipulated, and interactive information is dynamically presented. Our system provides the essential technology for expanding such dynamic projection mapping applications.
Lihui Wang, Hongjin Xu, Satoshi Tabata, Yunpu Hu, Yoshihiro Watanabe, and Masatoshi Ishikawa: High-Speed Focal Tracking Projection Based on Liquid Lens, ACM SIGGRAPH 2020 Emerging Technologies (SIGGRAPH '20) (Virtual Event, USA, 2020.8.24-28)
http://ishikawa-vision.org/mvf/dyna_d...